Table 1. Derived variables.

Variable	Definition
Treatment modality	Created for all separate treatments received, defined as not had treatment vs received/currently receiving treatment
Treatment degree	Considering treatment or monitoring vs had a single treatment modality vs had multiple treatment modalities
Treatment status	Considering treatment or monitoring vs currently on-treatment vs finished treatment <1 year ago vs finished treatment more than1 year ago
Mental affect	Derived from the EuroQoL EQ-5D anxiety/depression dimension, where a response of not anxious or depressed=0 and moderately or extremely depressed=1
Health state	A continuous variable represented by participant rating on the EuroQoL EQ-5D VAS scale